Beam hanger



Oct. 20, 1942.

R. A. DELAY BEAM HANGER Filed Oct. 1. 1941 2 Sheets-Sheet 1 3 %%Wmm Oct. 20, 1942. R. A. DELAY 2,299,684

BEAM HANGER Filed Oct. 1, 1941 2 Sheets-Sheet 2 Patented Oct. 20, 1942 UNITED STATES PATENT OFFICE 2,299,684 BEAM HANGER Roy A. Delay, Seminole, Okla. Application October 1, 1941, Serial No. 413,223

' 1 Claim.

This invention relates to a beam hanger for a reciprocal well pump operated by a walking beam, and has for the primary object the provision of a connection between the walking beam and the polish rod of the pump especially adapted to relieve the polish rod of lateral strain due to the conventional movement of the walking beam and which tends to crystallize the polish rod or place undue wear thereon and thereby insure the life of a polish rod for an indefinite period of time.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a side elevation, partly in section, illustrating a beam hanger connected to a polish rod of a pump and to a walking beam, a fragmentary portion of which is shown.

Figure 2 is a sectional view taken on the line 22 of Figure 1.

Figure 3 is a sectional view taken on the line 3-3 of Figure 1.

Figure 4 is a perspective view illustrating a pivot member.

Figure 5 is a perspective view illustrating a selfadjusting arm.

Figure 6 is a sectional view taken on the line 6-6 of Figure 2.

Referring in detail to the drawings, the numeral 5 indicates in entirety a beam hanger forming the subject matter of the present invention and especially adaptable for connecting a polish rod 6 of a reciprocal pump to one end of a walking beam 1. The support of the walking beam is indicated by the character 8 and the pivotal connection between the walking beam and the support 8 is indicated by the character 9. Due to the pump end of the walking beam moving in the arc of a circle when actuating or reciprocating the polish rod 6 of the pump, a lateral strain is placed upon the polish rod causing the latter to drag against its stuffing box In which within a short period of time brings about crystallization of the polish rod by placing undue wear thereon.

Through the use of the beam hanger 5 constituting the present invention, this lateral strain on the polish rod is eliminated thereby increasing the life of the polish rod.

The beam hanger 5 includes a substantially L shaped bracket II, pivots I2 and I3 and connecting rods I4 joining said pivots I2 and I3. The beam hanger 5 further includes a self-adjusting means I5 coacting with the walking beam and the bracket I I in maintaining the reciprocation of the polish rod in a vertical plane during the normal movement of the walking beam 1.

Usually the pump end of the walking beam 1 is bifurcated, as shown at I6, and the arm portion A of the L-shaped bracket II extends therethrough. Said arm portion A carries a pivot pin I! received in bearings I8 mounted on the bifurcated end of the walking beam. The arm portion A of the L-shaped bracket I I is in the form of a flat plate I 9 provided with bolt openings to receive bolts 20.

A bearing plate 2] is secured on the plate I9 of the L-shaped bracket II by the bolts 20 which also secure onto the bearing plate 2| retaining straps 22.

The bearing plate 2| is provided with a groove 23 forming a seat for a pivot member 24 retained in the groove 23 by the straps 22. The bearing member 24 at its ends is provided upon its top face with bearing portions 25 each having a sharp contact or bearing edge 26 to be engaged by bearings 2! to which the connecting rods I4 are threaded, as shown at 28. To removably secure the bearings 2! on the bearing portions 25 removable collars 29 are secured on the bearing member 2d by set screws 39. The collars cooperate with opposite edges of the L-shaped bracket II in preventing the bearings 21 from moving,

endwise of the pivot or bearing member 24.

The pivot I3 may be constructed similarly to the pivot I2. The pivot I 2 being of the construction.described heretofore in detail may operate with a minimum amount of friction.

The self-adjusting means I5 includes an arm 3| provided with a bifurcated end 32 apertured, as shown at 33, to receive a pivot 34 provided on the arm portion A of the L shaped bracket II a limited distance below the pivot I1. The arm 3| partly lies in the bifurcation I6 of the walking beam and its free endis provided with a screw threaded opening 34 to receive a set screw 35 which bears against the bracket II.

As the pump end of the walking beam moves upwardly in the arc of a circle and which movement tends to cause a lateral movement of the connections between said walkingbeam and the pump, the arm 3I contacts the wall 0 of the bifurcation I6 causing the beam hanger 5 to adjust itself to maintain the entire movement of the beam hanger in a path in direct vertical alignment with the polish rod so that the latter will not be subjected to lateral strain. This also applies during the downward movement of the pump end of the walking beam as will be apparent from the showing made in Figure 1.

While I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the spirit and scope of the invention as claimed.

Having thus described the invention, what I claim is:

In a walking beam hanger, an L-shaped member including right angularly disposed portions and one of said portions being in the shape of a shank to extend freely through a bifurcated end of a walking beam and the other portion being of plate-like shape located subjacent to the walking beam, means for pivotally mounting the shank-shaped portion of the member on the walking beam, said plate-like portion of said member having a groove, a bearing member resting in the groove and extending beyond opposite edges of the plate-like portion and having the ends thereof enlarged and tapered to provide sharp bearing edges, straps removably securing the bearing member in the groove and detachably secured to the plate-like portion, bearings engaging the sharp bearing edges of said bearing member, collars removably secured to the ends of the bearing member to prevent accidental displacement of the bearings, means connecting said bearings to a pump rod, an arm pivoted atone end to the L-shaped member adjacent said first means within the bifurcation of the walking beam to engage with the latter during its movement, and a set screw threaded to the free end of the arm and engaging the L-shaped member.

ROY A. DELAY. 

